Door-controlling means.



J. GERARD.

DOOR CONTROLLING MEANS.

APPLICATION FILED AUG. 29, 1914.

1,11 ,305. Patnted 001;. 27, 1914.

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APPLICATION FILED AUG. 29, 1914.

Patented Oct. 27, 1914.

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m I Fm7 j in Hall onrrnn sT a Es JOHN GERARD, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO THE AMERICAN HARD- WARE CORPORATION, OF NEW BRITAIN, CONNECTICUT, A CORPORATION OF CON- NECTIC'UT.

DOOR-CONTROLLING MEANS.

Specification of Letters Patent.

Patented oet. aaiera.

Application filed August 29, 1914. Serial No. 859,147.

To all whom it may concern:

Be it known that I, JOHN Gemini), a citizen of the United States, residing at New Britain, county of Hartford, State of Connecticut, have invented certain new and useful Improvements in. Door-Controlling Means, of which the following is a full, clear, and exact description.

My invention relates to door controlling means and consists in a new and'improved door closer for a double swing door. The closer is so constructed that it may also have, in combination therewith, checking means.

The object of the invention is to improve the construction of such a device in many ways, and notably to improve the construction in such a way that the door with which the device is associated will be effectively held in its closed position against severe drafts. This and other advantages will be apparent from an examination of the accompanying drawings and a reading of the following specification.

In the accompanying drawings-Figure i 's a central longitudinal section on a ver-- tical plane of the various parts assembled; Fig. 2 is a central longitudinal section on the plane of the line 22, Fig. 1; Fig. 3 is a similar view showing the parts in a different position; Fig. at is a section on the line .l: of Fig. 1, showing certain parts in elevation; Fig. 5 is a cross section on the line 55, Fig. 1; Fig. 6 is a plan view of certain details detached; Figs. 7, 8, 9 and -10 are perspective ,views of detached de tails; Figs. 11, 12 and 13 illustrate a modification.

lIn the form of my construction shown in Figs. 1 to 10, 1 represents a casing having a longitudinal spring chamber at one end and having a transverse spindle chamber at the other end. 2 represents a closer spring within the spring chamber. 3 represents a spindle having a relatively enlarged hub portion 4; which takes a bearing within the spindle chamber. 5 is an arm mounted at the outer end of the spindle for connection with the door to which the device is to be applied, the frame 1 being suitably mounted in or on some part of the door casing or sill. In the particular form shown, the design is particularly applicable for mounting in the door sill, the spindle 3 operating in this case as a pivotal mounting for the lower edge of the door. 6 is a head slidably mounted in the spring chamber. This head 1S connected by a link 7 with the spindle 3, the connection being efiected in a,

7, so that the said link may oscillate to and fro (see Figs. 2 and'3). Above and below the horizontal slot there is a relatively contracted passage, as best seen in Fig. 4:, into which the rollers 10-11 may partially project when the parts stand in the position in which the door is closed, said partial contraction forming, in effect, a centering seat. The enlarged part or hub of the spindle 4 has a horizontal clearance recess in line with the link 7 to ermit the latter to oscillate. Above and elow this horizontal clearance space is a deep notch of a width corresponding approximately to the diameter of the rolls 10 and 11. 10 and 11 stand in these deep notches as best seen in Figs. 2, 4 and 6. When the parts thus far described are assembled, it is obvious that the pin 9 functions substantially as a crank pin for the spindle 3 and link 7, and, as will be seen, this crank pin, when the parts stand in the position shown in Figs. 1 and 2, is located at a greater dis tance from the axis of the spindle 3 than when the parts stand in the position shown in Fig. 3. With the parts thus assembled the strain of the spring 8 is in a direction to move the head 6 away from the spindle. Hence, when the arm 5 is moved to the position shown in Fig. 3 and then released, the spring will expand and through the medium of the link 7 and crank pin 9 will restore the arm 5 to the position shown in Fig. 1. When that position is reached the rollers 10--11 will sink into the stop notch previously described, the crank pin 9 moving outward in a radial direction relatively to the axis of the spindle 3 until the parts assume the normal closed position shown in Fig. 2. It is obvious that in opening the door in either direction it requires some- The rolls power to start the door away from its closed position, it is obvious that drafts a ainst the closed door are eifectively resisted.

In the preferred construction the head 6 is in the form of a piston which may be employed as a check piston, and when the device is constructed as a combined door closer and check, it is preferable to use a liquid as the checking medium, the said liquid substantially filling the interior of the casing on both sides of the piston head 6. The piston head in this event may have a relatively large clearance passage controlled by a check valve 12 of the usual type to permit the piston head to move .with relative freedom in the dooropening direction, said check valve closing when the piston head moves in the door closing direction. I may also provide the usual tapered valve pin 12- which may pass throughthe check valve 12,

as shown, to provide a graduated check action. I may further provide the usual bypass, indicated conveniently at 14-, having a suitable by-pass controlling valve 15 No novelty per 86 is claimed in these details of checking construction, as they may be modi fied in a great variety of ways.

W'hen my invention embraces both a door closing means and a checking means I pref- 'erably provide a means to prevent back lash in the piston and associated parts.

This means, in its preferred form, comprises an extension 16 at that end of the link carrying the rollers 10 and 11. This extension, when the parts are in the position of rest shown in Fig. 2, lies very close to, or bears against, an abutment piece 17 carried by the spindle 3. The extension 16 is suitably tapered on each side so that it will clear the abutment piece 17 when the door is moved away from the'closed position, but when the door is in the closed position the extension 16 will guarantee the projecting of the piston head 6 to the limit of its outward movement. This feature of construction is advantageous in that if the door is quickly closed and the liquid is put under heavy pressure back of the piston the rollers 10 and 11 will not be delayed in reaching the door centering and holding position, but will be forced positively into that position by the engage ment of the projection 16 against the abutment 1.7. In this way back lash, shatter and delayed action is prevented. Obviously,

when the construction is in the form of a combined door closer and check, the various parts should be securely closed against leak- In Figs. 11, 12 and 13 I have shown a slight modification in which the crank pin is indicated at 9*, the rollers at 10 and 11*, the link at 7*. In this case instead of mounting the rollers in recesses in the spindle hub, such as shown in Figs. 1 to 10, the crank pin 9 is provided with an integral right angle extension 9 which passes diametrically through a hole in the spindle hub and slides to and fro therein as the rollers move out of and into the stop notches. In this case I may likewise provide means for preventing back lash, the abutment being indicated at 17 and being carried by the inside wall of the spindle chamber, the extension which cooperates with said abutment being, in this instance, indicated at 16 and being located at the extreme end of the part- 9". I have shown this modification simply to illustrate that modifications may be resorted to, as to these and other parts of my invention without departing from the spirit and scope thereof.

What I claim is:

1. In a door controlling means, a frame, a rotatable spindle, a spring and a radially movable crank pin carried by said spindle and cooperating between said spindle and said spring.

2. In a door controlling mechanism, a frame, a spindle rotatably mounted therein, a closer spring mounted therein, a radially movable crank pin carried by said spindle and held in operative relation thereto by said frame, a notch in said frame to permit said crank pin to move radially to a limited extent outwardly from the axis of the spindle and means for operatively connecting a spring with said crank pin.

3. In a door controlling means, a frame, a spindle rotatably mounted therein, acloser spring mounted therein, a crank )in carricd by said spindle and capable 0 limited radial movement relatively to said spindle with means for controlling said limited ra dial movement, means for operatively conne ting said spring with said crank pin whereby said spring will impart rotary movement to said spindle through said crank pin.

4. In a door controlling means, a. frame, a spindle rotatably mounted therein, a closer spring mounted therein, a crank pin carried by said spindle and capable of limited radial movement relatively to said spindle with means for controlling said limited. radial movement. means for operativeiy connecting said spring with said crank pin whereby said spring will impart rot*r v movement to said spindle. through .l crank pin. said means includinga checking piston and link.

5. In a door controlling means, a frame,

a spindle rotatably mounted therein, a closer spring mounted therein, a crank pin carried by said spindle and capable of limit ed radial movement relatively to said spindle with means for controlling said limited radial movement, means for operatively connecting said spring with said crank pin whereby said spring" will impart rotary movement to said spindle through said crank pin, said means including a checking piston and link with means for positively forcing said crank pin radially in a direction away from the axis of the spindle when said spindle stands in one angular position.

6. In a door controlling means, a frame, a rotatable spindle, a closer spring, means for operatively connecting said spring with said spindle including means rotating with the spindle and movable to a limited extent toward and away from the axis of the spindle.

7. In a door controlling means, a frame, a spindle having a relatively enlarged hub portion rotatably mounted in said frame, a recess in one side of said hub portion, a crank pin located in said recess and movable to and fro therein in a. direction toward and away from the axis of the spindle, the wall of said frame in which said hub is located operating to hold said pin in said recess, a stop notch in said wall to permit said pin to be moved to a limited extent in a direction away from said spindle to frictionally hold the spindle against movement when in one angular position, and a spring operatively connected to said spindle through said pin and normally tending to move said spindle in a direction to cause said pin to move toward said stop notch.

8. In a door controlling means, a frame, a spindle having a relatively enlarged hub portion rotatably mounted in said frame, a recess in one side of said hub portion, a

crank pin located in said recess and movable to and fro therein in a direction toward and away from the axis of the spindle, the wall of said frame in which said hub is located operating to hold said pin in said recess, a stop notch in said wall to permit said pin to be moved to a limited extent in a direction away from said spindle to frictionally hold the spindle-against movement when in one angular position, and a spring operatively connected to said spindle through said pin I and normally tending to move said spindle in a direction to cause said pin to move toward said stop notch and a-checking piston also operatively connected to said pin and located within the frame.

9. In a door controlling means, a frame, a spindle having a relatively enlarged hub portion rotatably mounted in said frame, a recess in one side of said hub portion, a crank pin located in said recess and movable to and fro therein in a direction toward and away from the axis of the spindle, the wall of said frame in, which said hub is located operating to hold said pin in said recess, a stop notch. in said wall to permit said pin to be moved to a limited extent in a direction away from said spindle to frictionally hold the spindle against movement when in one angular position, and a spring operatively connected to said spindle through said pin and normally tending to move said spindle in a direction to cause said pin to move toward said stop notch, and a checking piston also operatively connected to said pin and located within the frame, with means for positively forcing said pin into said stop notch when said spindle is turned to a position where said pin faces said stopnotch.

JOHN GERARD.

Witnesses:

IsAAo D. RUssELL, W. P. HUDsoN. 

